Description
The KNB1-63 series Miniature Circuit Breaker (MCB) is designed for both functionality and aesthetics. With a robust and reasonable structure, it features a high breaking capacity that ensures reliable protection against overloads and short circuits. This circuit breaker is suitable for use in AC lines with a frequency of 50/60Hz, rated working voltages of 240V/415V, and current ratings ranging from 6A to 63A. It is conveniently mounted on standard DIN rails, making installation and operation effortless. The MCB complies with GB10963 and IEC/EN60898 standards, ensuring its reliability and safety in various applications.
Specifications
| Frame Class | 63A |
|---|---|
| Rated Working Voltage | 240V/415V |
| Rated Frequency | 50/60Hz |
| Rated Working Current | 1, 3, 6, 10, 16, 20, 25, 32, 40, 50, 63A |
| Making and Breaking Capacity | 6000A (6~40A), 4500A (50, 63A) |
| Release Type | B, C, D |
| Poles | 1, 2, 3, 4P |
| Mechanical Life | 20,000 cycles |
| Electric Life | 4,000 cycles |
Additional Information
| Sequence NO. | Release | Test Current I/In | Start State | Tripping Time | Expected Result |
|---|---|---|---|---|---|
| 1 | B, C, D | 1.13In | Cold state | t ≤ 1h | Not tripping |
| 2 | B, C, D | 1.45In | Start right after the test 1 | t < 1h | Tripping |
| 3 | B, C, D | 2.55In | Cold state | 1s < t < 60s (In ≤ 32A) 1s < t < 120s (In > 32A) |
Tripping |
| 4 | B, C, D | 3In, 5In, 10In | Cold state | t ≤ 0.1s | Not Tripping |
| 5 | B, C, D | 5In, 10In, 20In | Cold state | t < 0.1s | Tripping |
